At the time of the Lewis and Clark Expedition, Cascade County was the territory of the Blackfeet.(Merrill)
The county was named for the falls on the Missouri River.(Gannett)
Two years before Montana was granted statehood, T.E. Collins proposed the creation of Cascade County.
Collins, a representative at the first legislative assembly held in Virginia City, proposed a bill to the Territorial
Congress which would designate a new territorial county. The year was 1887 and Montana was still a territory that
President Abraham Lincoln had approved of creating in 1864. Collins’ bill proposed taking land from Lewis and Clark,
Meagher, and Chouteau counties in order to create this new territorial county. The bill was approved, after many debates,
and Cascade County was created. Two years later, in 1889, Montana was granted statehood.(Cascade)
Cascade County Government website. Internet. http://departments.cascadecountymt.gov/planning/quickfacts
Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 70.
Merrill, Andrea; Judy Jacobson (1997). Montana almanac. Helena, Montana: Falcon Publishing. ISBN 1-56044-493-2.